Door sticker says 60 /60. I run 60 in the fronts and 55 in the rears. I have even tread wear this way. If I bump it up to 60 in the rear ... I wear more in the center of both tires on each side. If I were to run 80 psi on the rears like the sidewall says ... I'd not be able to keep it between the navigational beacons as my truck gets real squirrely in the rear end with that much pressure. Found that out one time when had tires changed and store put 80 psi in them per sidewall max.
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